If you are not 100% sure of which generation controller you have, we highly recommend you open your controller first to check the motherboard model before you purchase.
The L1 R1 button only fit for the first generation PS4 controller (Motherboard Model: JDM 001, 011, 020, 021). 
There is a tip here might be helpful in case you don’t have the tools: The 2nd generation controllers come with a very thin lightbar on top of the touchpad and most of the 1st generation controllers don’t. 
INSTALLATION GUIDES:
Designed for Sony PlayStation 4 controllers only. 
Requires technical internal fitting, the modded PS4 controllers must be opened to install.
The tool required to replace the buttons is included in the package. 
Watch installation video on Youtube will be helpful if you do not know how to install them, be careful and patience will avoid some unnecessary mistakes.
PACKAGE INCLUDES: 
2 x Metal Joystick Thumb Sticks
4 x Metal ABXY Buttons
1 x Metal D-pad Button
1 x Phillips Cross Screwdriver
4pcs Philip’s head screw
Notes: 
The PS4 controller is not included.
Each item has been well tested before delivery, but we cannot 100% guarantee it won’t be defective because of transportation. Any problem, please feel free to contact us through Amazon Email System and we will do our best to solve it.
HIGH QUALITY: Perfect fit for PS4 DualShock 4 controllers, replace your old or defective original PS4 buttons.
COMPATIBILITY: The ♥ L1 R1 L2 R2 ♥ buttons only fit for official Sony PlayStation 4 controllers with ♥ the first generation ♥ button design. To see other accessories for PS4 controllers in our range, simply search ‘TOMSIN’ in the search bar above.
PACKAGE INCLUDE: 2 x Metal Joystick Thumb Sticks, 4 x Metal ABXY Buttons, 1 x Metal D-pad Button, 1 x Metal L1 L2 Buttons, 1 x Metal R1 R2 Buttons, 2 x Spring, 1 x Phillips Cross Screwdriver, 4pcs Philip’s head screw
MAXIMUM GAMING EXPERIENCE: With textured and larger contact surface design, these PS4 controller buttons provide better control, which reduces hand and thumb fatigue. It will take your game experience to a better level.
PERSONALIZED DESIGN: Available in much different color so you can create a truly unique looking controller personalized to you!

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